Process of making a viscous liquid material.



LEONARD S. VAN W'ESTRUM, OF BRANTFORD, ONTARIO, CANADA.

PROCESS OF MAKING A VISCOUS LIQUID MATERIAL.

LOLHLSOL No Drawing.

To all whom it may concern:

Be it known that I, LEONARD S. VAN WEs'rRUM, a subject of the Queen ofthe Netherlands, residing at Brantford, Ontario, Canada, have inventedcertain new and useful Improvements in Processes of Making ViscousLiquid Material; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame. v

My invention relates to improvements in the methods of manufacturing arubberlike cement for roofing, paving, painting, and insulatingpurposes, and which also serves as a substitute for cheap rubber.

l-leretofore asphalt, tar, mineral oils, and the residuums therefromhave been mixed with the residuum from petroleum, in order to make anasphalt or tar cement of the right consistency, but the cement soobtained is deficient in elasticity.

Theobject of my invention is to produce such a cement which will notonly have the valuable properties of the cement already described, butwill be in addition exceedingly tough and elastic.

My invention therefore consists in the production of such a cement bythe addition to asphalt, tar, or mineral oils of a residuum of vegetableoils obtained after distillation, like cotton seed oil pitch, forexample.

Cotton seed oil pitch at the present time is not a commercial articlebut is merely a by-product obtained in soap making. In making whitesoap, the cotton seed oil is distilled, leaving behind all the coloredparts and thick, gummy constituents, the result being a vegetable pitch.

In carrying out my invention, I melt asphalt, tar, or mineral oils andto the melted mass I add from 10 to 40 per cent. of a residuum ofmineral oils, such as petroleum residuum, and then to the mixture I addfrom 1 to 20 per cent. of a residuum of vegetable oils, like cotton seedoil pitch.

Specification of Letters Patent.

Patented Feb. 6, 1912.

Application filed May 18, 1909. Serial No. 496,841.

In case of liquid asphalt, tar, etc., the residuum of mineral oils maybe omitted and merely the residuum of vegetable oils added thereto. Forpainting purposes, light mineral oils may be used, but for roofing andpaving purposes heavy mineral oils are used.

Thedifferent mixtures can be varied widely, a specific instance beingthe following: melted asphalt 70 per cent, petroleum oil residuum 20 percent, cotton seed oil pitch 10 per cent, all mixed and stirred together,under the influence of heat.

The resulting mixture makes an exceedingly tough and elastic cement,capable of general use for roofing, paving, and insulating purposes. Ifit is desired to make a paint, the asphalt in the composition mentionedabove can be replaced by a light mineral oil.

In case of a paint, I have found it sometimes desirable to use somedrying agent,

such as linseed oil or the other well known drying oils, or resin,shellac, or zinc oxid, gums, alcohol, turpentine, etc., all of which arewell known. Only a small percentage of such a drying agent is required,however.

The product is a viscous liquid which can be readily applied 'with abrush, and which soon hardens, making a tough coating. It may be usedgenerally for roofing, paving and insulating purposes.

Having thus described my invention, I claim: I

The herein described composition of matter consisting of substantially70 parts asphalt, 20 parts petroleum residuum, and 10 parts cotton seedoil pitch adapted, when spread over surfaces and allowed to dry, to

form a tough coating, substantially as described. v

In testimony whereof, I aflix my signature,

'in presence of two witnesses.

LEONARD s. VAN WESTRUM.

Witnesses:

R. M. PARKER, H. T. MCKEEVER.

